How Many Calories Are In Tuna Noodle Casserole? | Smart Plate Math

Tuna-and-noodle bakes vary a lot. The pan size, how saucy you go, cheese amount, and whether you add crumbs all nudge the final count. Below, you’ll see how the numbers shake out, plus simple swaps to land in your target range without losing that cozy, creamy vibe.

Calories In A Tuna-And-Noodle Bake — What Changes The Number

Three levers dominate: pasta weight after boiling, the type and volume of condensed soup, and the cheese layer. A modest crumb topping can matter too. When you add peas or mushrooms, the calorie lift is small compared with dairy ingredients and crumbs.

Ingredient Baselines You Can Trust

The data points below come from widely used nutrition datasets so you can estimate confidently at home. Use them to build your own quick math or to verify a label entry in a recipe app.

Calorie Building Blocks

Ingredient (Reference)	Reference Amount	Calories
Light tuna, canned in water, drained	100 g	~86 kcal
Egg noodles, cooked	100 g	~138 kcal
Condensed cream of mushroom soup	100 g	~80–104 kcal
Frozen peas, cooked	160 g (1 cup)	~83 kcal
Cheddar cheese, shredded	100 g (~1 cup packed)	~403 kcal
Bread crumbs, dry	100 g	~395 kcal

Those baselines make it easy to plan portions. For most pans, pasta lands between 450–600 g cooked. Cheese swings from 75–170 g depending on how melty you want the top. Soup can be a single 300 g can or closer to 450 g if you prefer saucier.

How Big Is “One Serving” In Real Life?

Commonly, a 9×13-inch tray is cut into six squares. If the family is hungrier, you’ll get four; if you’re planning lunches, cut eight. Calorie math rides on that cut line as much as the ingredients.

Two Example Builds (Per Whole Pan And Per Slice)

Here are two practical builds for a 9×13-inch tray. Both include peas for a bit of color and bite. The first leans creamy without being heavy. The second trims dairy and crumb to shave calories while keeping texture.

Classic Comfort Build

This version uses standard condensed soup, a full cup of cheese, and a light crumb. It hits the profile most home cooks expect.

• Cooked egg noodles: 550 g (≈ 7 tightly packed cups)
• Light tuna, drained: 240 g (two typical 120 g drained portions)
• Condensed cream of mushroom soup: 300 g
• Frozen peas (thawed): 160 g
• Cheddar, shredded: 100 g (~1 cup packed)
• Dry bread crumbs: 30 g (~¼ cup)

Estimated calories for the whole tray: noodles ~759; tuna ~206; soup ~255; peas ~83; cheese ~403; crumbs ~118. Total ≈ 1,824 kcal for the pan. Cut six slices for ≈ 300–320 kcal per slice. Cut four for ≈ 455 kcal. The cheesy layer and crumb do much of the lifting here.

Lighter Build

Swap reduced-fat condensed soup, use ¾ cup cheese (about 75 g), and skip the crumb. Keep the same pasta and tuna amounts.

• Cooked egg noodles: 550 g
• Light tuna, drained: 240 g
• Reduced-fat condensed mushroom soup: 300 g
• Frozen peas: 160 g
• Cheddar, shredded: 75 g
• No bread crumbs

Estimated calories for the whole tray: noodles ~759; tuna ~206; soup ~240; peas ~83; cheese ~302. Total ≈ 1,590 kcal. Six slices land around 260–280 kcal. That’s a noticeable drop without changing the serving size.

How To Estimate Your Own Pan

Grab a kitchen scale, jot down weights after draining tuna and after boiling noodles, and multiply by the reference values above. Then add cheese and any crumb topping. Divide by the number of squares you plan to cut.

Quick Walk-Through

1. Weigh the boiled noodles in the colander.
2. Weigh the drained tuna.
3. Note grams of soup from the can label.
4. Weigh cheese and any crumbs.
5. Use the reference calories per 100 g to calculate totals, then divide by slices.

Once you’ve done it once, you’ll know where your household lands and you can repeat it fast every time. Snacks, sides, and dessert fit better in a day once you set your daily calorie needs.

Ingredient Tweaks That Change Calories Fast

Soup Choice

Reduced-fat condensed soup trims calories and cuts some saturated fat per 100 g. The difference across brands ranges, so check the label on the can you’re using.

Cheese Amount

Cheddar sits a bit above 400 kcal per 100 g, so every 25 g (¼ cup loosely packed) adds roughly 100 calories to the pan. If you like extra browning, try a smaller amount of a sharper style; you’ll taste more with less weight.

Crumb Or No Crumb

Dry crumbs sit near 395 kcal per 100 g. A 30 g sprinkle adds ~120 calories to the whole tray. Spritzing the top with oil instead of tossing crumbs in butter keeps the crunch while lowering the lift.

Add-Ins That Barely Move The Needle

Peas and mushrooms are light hitters in calorie terms. A full cup of cooked peas is around 80 calories; pan-sautéed mushrooms come in lower. They change texture and volume more than they change the math.

Label Tips For Sodium-Heavy Ingredients

Condensed soups and canned foods can push salt numbers up. On the Nutrition Facts label, sodium guidance from FDA calls anything 5% Daily Value or less per serving “low” and 20% or more “high.” Reduced-sodium soup plus drained tuna keeps the dish friendlier for most dinner plates.

Portion Guide For Common Pans

Not every tray is 9×13-inch. If you’re cooking in a skillet, pie dish, or smaller casserole, use the chart below to pick a sensible slice and estimate calories from your total.

Slice Planner By Pan

Pan Or Dish	Typical Slices	Per-Slice Tip
9×13-inch tray	6 (or 8 smaller)	Standard for family dinners and leftovers.
8×8-inch square	4 (or 6 smaller)	Use for half-batches; same ingredient ratios.
12-inch skillet	6 wedges	Flatten the top for even browning.

Protein, Carbs, And Fats—What This Dish Delivers

Pasta brings most of the starch. Fish supplies lean protein. Cheese and soup add fat and extra flavor. Want an even leaner plate? Keep the fish generous, hold the crumb, and use a lighter soup. Want more staying power? Add a little more cheese and bump the fish by a third can.

Smart Swaps That Keep Texture

• More fish, same cheese: protein up with a tiny calorie bump.
• Half crumb + spray oil: keeps crunch while trimming fat.
• Sharp cheddar: stronger flavor means you can use less.
• Mushroom-forward: sauté sliced mushrooms and fold in for volume with minor calories.

Frequently Missed Details That Skew Counts

Wet Noodles

Shaking off extra water before mixing matters. Water weight doesn’t add calories, but it changes the grams used in your math. Let noodles steam-dry for a minute in the colander.

Drained Weight On Fish

Cans list net weight, not drained weight. If you don’t weigh after draining, you’ll over-estimate tuna calories. A quick scale reading keeps your totals honest.

Heaping Cups Of Cheese

“One cup” of shredded cheese can vary by 30 g or more depending on packing. Weighing 75–150 g is the reliable route when you care about the final number.

Make It Fit Your Day

When a slice runs near your target, sides are easy: a bright salad or steamed greens. If your slice is on the richer side, go lighter at lunch or pair dinner with a veggie-heavy side and fruit. Want a deeper read on fats from seafood? For a friendly primer, you can skim our omega-3 benefits for heart.